516 lines
17 KiB
C
516 lines
17 KiB
C
/******************************************************************************
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*
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* Module Name: evxfregn - External Interfaces, ACPI Operation Regions and
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* Address Spaces.
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* $Revision: 26 $
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999, 2000, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial prton of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __EVXFREGN_C__
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#include "acpi.h"
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#include "achware.h"
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#include "acnamesp.h"
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#include "acevents.h"
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#include "amlcode.h"
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#include "acinterp.h"
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#define _COMPONENT EVENT_HANDLING
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MODULE_NAME ("evxfregn")
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/******************************************************************************
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*
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* FUNCTION: AcpiInstallAddressSpaceHandler
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*
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* PARAMETERS: Device - Handle for the device
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* SpaceId - The address space ID
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* Handler - Address of the handler
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* Setup - Address of the setup function
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* Context - Value passed to the handler on each access
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*
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* RETURN: Status
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*
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* DESCRIPTION: Install a handler for all OpRegions of a given SpaceId.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiInstallAddressSpaceHandler (
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ACPI_HANDLE Device,
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ACPI_ADDRESS_SPACE_TYPE SpaceId,
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ADDRESS_SPACE_HANDLER Handler,
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ADDRESS_SPACE_SETUP Setup,
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void *Context)
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{
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_OPERAND_OBJECT *HandlerObj;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_STATUS Status = AE_OK;
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OBJECT_TYPE_INTERNAL Type;
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UINT16 Flags = 0;
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FUNCTION_TRACE ("AcpiInstallAddressSpaceHandler");
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/* Parameter validation */
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if ((!Device) ||
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((!Handler) && (Handler != ACPI_DEFAULT_HANDLER)) ||
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(SpaceId > ACPI_MAX_ADDRESS_SPACE))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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AcpiCmAcquireMutex (ACPI_MTX_NAMESPACE);
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/* Convert and validate the device handle */
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Node = AcpiNsConvertHandleToEntry (Device);
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if (!Node)
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{
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Status = AE_BAD_PARAMETER;
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goto UnlockAndExit;
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}
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/*
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* This registration is valid for only the types below
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* and the root. This is where the default handlers
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* get placed.
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*/
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if ((Node->Type != ACPI_TYPE_DEVICE) &&
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(Node->Type != ACPI_TYPE_PROCESSOR) &&
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(Node->Type != ACPI_TYPE_THERMAL) &&
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(Node != AcpiGbl_RootNode))
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{
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Status = AE_BAD_PARAMETER;
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goto UnlockAndExit;
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}
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if (Handler == ACPI_DEFAULT_HANDLER)
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{
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Flags = ADDR_HANDLER_DEFAULT_INSTALLED;
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switch (SpaceId)
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{
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case ADDRESS_SPACE_SYSTEM_MEMORY:
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Handler = AcpiAmlSystemMemorySpaceHandler;
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Setup = AcpiEvSystemMemoryRegionSetup;
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break;
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case ADDRESS_SPACE_SYSTEM_IO:
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Handler = AcpiAmlSystemIoSpaceHandler;
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Setup = AcpiEvIoSpaceRegionSetup;
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break;
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case ADDRESS_SPACE_PCI_CONFIG:
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Handler = AcpiAmlPciConfigSpaceHandler;
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Setup = AcpiEvPciConfigRegionSetup;
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break;
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default:
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Status = AE_NOT_EXIST;
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goto UnlockAndExit;
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break;
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}
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}
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/*
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* If the caller hasn't specified a setup routine, use the default
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*/
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if (!Setup)
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{
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Setup = AcpiEvDefaultRegionSetup;
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}
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/*
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* Check for an existing internal object
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*/
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ObjDesc = AcpiNsGetAttachedObject ((ACPI_HANDLE) Node);
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if (ObjDesc)
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{
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/*
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* The object exists.
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* Make sure the handler is not already installed.
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*/
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/* check the address handler the user requested */
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HandlerObj = ObjDesc->Device.AddrHandler;
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while (HandlerObj)
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{
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/*
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* We have an Address handler, see if user requested this
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* address space.
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*/
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if(HandlerObj->AddrHandler.SpaceId == SpaceId)
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{
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Status = AE_EXIST;
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goto UnlockAndExit;
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}
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/*
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* Move through the linked list of handlers
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*/
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HandlerObj = HandlerObj->AddrHandler.Next;
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}
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}
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else
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{
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DEBUG_PRINT (TRACE_OPREGION,
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("Creating object on Device %p while installing handler\n",
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Node));
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/* ObjDesc does not exist, create one */
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if (Node->Type == ACPI_TYPE_ANY)
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{
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Type = ACPI_TYPE_DEVICE;
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}
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else
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{
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Type = Node->Type;
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}
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ObjDesc = AcpiCmCreateInternalObject (Type);
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if (!ObjDesc)
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{
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Status = AE_NO_MEMORY;
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goto UnlockAndExit;
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}
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/* Init new descriptor */
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ObjDesc->Common.Type = (UINT8) Type;
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/* Attach the new object to the Node */
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Status = AcpiNsAttachObject (Node, ObjDesc, (UINT8) Type);
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if (ACPI_FAILURE (Status))
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{
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AcpiCmRemoveReference (ObjDesc);
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goto UnlockAndExit;
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}
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}
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DEBUG_PRINT (TRACE_OPREGION,
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("Installing address handler for region %s(%X) on Device %p(%p)\n",
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AcpiCmGetRegionName (SpaceId), SpaceId, Node, ObjDesc));
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/*
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* Now we can install the handler
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*
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* At this point we know that there is no existing handler.
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* So, we just allocate the object for the handler and link it
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* into the list.
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*/
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HandlerObj = AcpiCmCreateInternalObject (INTERNAL_TYPE_ADDRESS_HANDLER);
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if (!HandlerObj)
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{
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Status = AE_NO_MEMORY;
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goto UnlockAndExit;
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}
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HandlerObj->AddrHandler.SpaceId = (UINT8) SpaceId;
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HandlerObj->AddrHandler.Hflags = Flags;
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HandlerObj->AddrHandler.Next = ObjDesc->Device.AddrHandler;
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HandlerObj->AddrHandler.RegionList = NULL;
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HandlerObj->AddrHandler.Node = Node;
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HandlerObj->AddrHandler.Handler = Handler;
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HandlerObj->AddrHandler.Context = Context;
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HandlerObj->AddrHandler.Setup = Setup;
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/*
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* Now walk the namespace finding all of the regions this
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* handler will manage.
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*
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* We start at the device and search the branch toward
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* the leaf nodes until either the leaf is encountered or
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* a device is detected that has an address handler of the
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* same type.
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*
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* In either case we back up and search down the remainder
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* of the branch
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*/
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Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, Device,
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ACPI_UINT32_MAX, NS_WALK_UNLOCK,
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AcpiEvAddrHandlerHelper,
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HandlerObj, NULL);
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/*
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* Place this handler 1st on the list
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*/
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HandlerObj->Common.ReferenceCount =
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(UINT16) (HandlerObj->Common.ReferenceCount +
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ObjDesc->Common.ReferenceCount - 1);
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ObjDesc->Device.AddrHandler = HandlerObj;
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UnlockAndExit:
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AcpiCmReleaseMutex (ACPI_MTX_NAMESPACE);
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return_ACPI_STATUS (Status);
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}
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/******************************************************************************
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*
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* FUNCTION: AcpiRemoveAddressSpaceHandler
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*
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* PARAMETERS: SpaceId - The address space ID
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* Handler - Address of the handler
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*
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* RETURN: Status
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*
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* DESCRIPTION: Install a handler for accesses on an Operation Region
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiRemoveAddressSpaceHandler (
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ACPI_HANDLE Device,
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ACPI_ADDRESS_SPACE_TYPE SpaceId,
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ADDRESS_SPACE_HANDLER Handler)
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{
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_OPERAND_OBJECT *HandlerObj;
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ACPI_OPERAND_OBJECT *RegionObj;
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ACPI_OPERAND_OBJECT **LastObjPtr;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_STATUS Status = AE_OK;
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FUNCTION_TRACE ("AcpiRemoveAddressSpaceHandler");
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/* Parameter validation */
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if ((!Device) ||
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((!Handler) && (Handler != ACPI_DEFAULT_HANDLER)) ||
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(SpaceId > ACPI_MAX_ADDRESS_SPACE))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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AcpiCmAcquireMutex (ACPI_MTX_NAMESPACE);
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/* Convert and validate the device handle */
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Node = AcpiNsConvertHandleToEntry (Device);
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if (!Node)
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{
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Status = AE_BAD_PARAMETER;
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goto UnlockAndExit;
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}
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/* Make sure the internal object exists */
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ObjDesc = AcpiNsGetAttachedObject ((ACPI_HANDLE) Node);
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if (!ObjDesc)
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{
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/*
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* The object DNE.
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*/
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Status = AE_NOT_EXIST;
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goto UnlockAndExit;
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}
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/*
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* find the address handler the user requested
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*/
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HandlerObj = ObjDesc->Device.AddrHandler;
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LastObjPtr = &ObjDesc->Device.AddrHandler;
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while (HandlerObj)
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{
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/*
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* We have a handler, see if user requested this one
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*/
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if(HandlerObj->AddrHandler.SpaceId == SpaceId)
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{
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/*
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* Got it, first dereference this in the Regions
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*/
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DEBUG_PRINT (TRACE_OPREGION,
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("Removing address handler %p(%p) for region %s on Device %p(%p)\n",
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HandlerObj, Handler, AcpiCmGetRegionName (SpaceId),
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Node, ObjDesc));
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RegionObj = HandlerObj->AddrHandler.RegionList;
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/* Walk the handler's region list */
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while (RegionObj)
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{
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/*
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* First disassociate the handler from the region.
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*
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* NOTE: this doesn't mean that the region goes away
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* The region is just inaccessible as indicated to
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* the _REG method
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*/
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AcpiEvDisassociateRegionFromHandler(RegionObj, FALSE);
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/*
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* Walk the list, since we took the first region and it
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* was removed from the list by the dissassociate call
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* we just get the first item on the list again
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*/
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RegionObj = HandlerObj->AddrHandler.RegionList;
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}
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/*
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* Remove this Handler object from the list
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*/
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*LastObjPtr = HandlerObj->AddrHandler.Next;
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/*
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* Now we can delete the handler object
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*/
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AcpiCmRemoveReference (HandlerObj);
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AcpiCmRemoveReference (HandlerObj);
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goto UnlockAndExit;
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}
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/*
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* Move through the linked list of handlers
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*/
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LastObjPtr = &HandlerObj->AddrHandler.Next;
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HandlerObj = HandlerObj->AddrHandler.Next;
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}
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/*
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* The handler does not exist
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*/
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DEBUG_PRINT (TRACE_OPREGION,
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("Unable to remove address handler %p for %s(%X), DevNode %p, obj %p\n",
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Handler, AcpiCmGetRegionName (SpaceId), SpaceId, Node, ObjDesc));
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Status = AE_NOT_EXIST;
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UnlockAndExit:
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AcpiCmReleaseMutex (ACPI_MTX_NAMESPACE);
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return_ACPI_STATUS (Status);
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}
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